Stef, now you mention it...

do you know if Amber has something in relation to node.js?

I mean for the server side

would be possible to program the server side of an app with amber smalltalk?

sebastian

o/





On Oct 27, 2012, at 1:30 PM, Stéphane Ducasse wrote:

> better look at amber (because it is better to get the original than the copy).
> 
> Stef
>> Hey Udo!
>> 
>> well, if node does a great job and you love Smalltalk, then this [1] could 
>> get your attention
>> 
>> sebastian
>> 
>> o/
>> 
>> [1] http://u8.smalltalking.net/contribution.aspx?contributionId=133
>> 
>> 
>> 
>> 
>> On Oct 27, 2012, at 6:09 AM, Udo Schneider wrote:
>> 
>>> All,
>>> 
>>> coming from a Node.JS background for those kind of tasks I'm not quite sure 
>>> how to do it "correctly" in Pharo. I need to
>>> 
>>> * listen on up to 32 serial (USB) ports for incoming commands. Each might 
>>> use a different "protocol".
>>> * listen to network ports, midi channels or OSC
>>> * if communication is received then a response could be send over multiple 
>>> of the channels mentioned above
>>> * reaction time - means incomming message, decode, encode of response and 
>>> distribution over other channels should ideally be around 10^-2 s.
>>> 
>>> I already found all the necessary communication classes in Pharo - and 
>>> being back in Smalltalk again parsing the commands is a real pleasure :-) 
>>> The one thing that makes me really nervous though is serial support. Up to 
>>> now I spawn a separate (Smalltalk) process for each serial port that polls 
>>> the serial port for new bytes - as far as I see polling is the only 
>>> available option. Although this seems to work it wastes a considerable 
>>> amount of CPU cycles IMHO. On my current system (MBP/i7) I can't have 
>>> enough channels to even barely bog the system down. However the deployment 
>>> platform I'm looking at is more in the range of an Raspberry Pi...
>>> 
>>> In Node.JS I'd simply create callbacks for all the different incoming 
>>> channels - so I wouldn't waste cycles for polling. So what would be the 
>>> best/recommended way to achieve this in Pharo?
>>> 
>>> Thanks,
>>> 
>>> Udo
>>> 
>>> 
>> 
> 
> 

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